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Finding the Fourth Proportional to 619,405.70, 929,108.55 and 479,437.70

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Solution

The fourth proportional to 619,405.70, 929,108.55 and 479,437.70 is: 719,156.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,405.70 : 929,108.55 = 479,437.70 : x
  2. Step 2: Convert to fraction form
    619,405.70/929,108.55 = 479,437.70/x
  3. Step 3: Cross multiply
    619,405.70x = 929,108.55 × 479,437.70
  4. Step 4: Simplify right side
    619,405.70x = 445,449,666,262.34
  5. Step 5: Solve for x
    x = 445,449,666,262.34/619,405.70
  6. Step 6: Final answer
    x = 719,156.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.